just as two dogs said,
all I can add is this.
like a dog getting ready to lay down, know how they circle a few times before they lay down.
be sure you plan the trip with the tank, as its very Awkward to handle and have a good place to put the thing down once you clear the tractor with it.
again as he said,
The safety way is to take the battery off the tractor and place it on the other side of the shop as you may have some spilled gas or gas fumes around, no excuse to have a gas fire or explosion over just taking a Fergy gas tank off.
"In my shop, if it can go wrong, it will, 2X"
good luck and be safe.
as i have gotten older, i try to get a buddy to come help or use my motor lift, with it i have complete control of the lift and it will roll the tank to the storage area.